研究目的
Investigating the performance enhancement of high-capacity DWDM-FSO communication links using coherent detection and digital signal processing under adverse weather and turbulent atmospheric conditions.
研究成果
The proposed coherent detection and DSP-aided DWDM-FSO link significantly outperforms traditional IM/DD systems in terms of BER, SNR requirements, and operational range under both adverse weather and turbulent conditions. This makes it a promising solution for high-capacity last-mile optical communication networks.
研究不足
The study is based on simulations using OptiSystem? 14.2, which may not fully capture all real-world atmospheric conditions and hardware imperfections. The practical implementation of the proposed system may face challenges related to alignment, hardware complexity, and cost.
1：Experimental Design and Method Selection:
The study employs a 32-channel DWDM-FSO link with DP-16QAM modulation, coherent detection, and DSP for performance enhancement. The link is analyzed under various atmospheric conditions including turbulence and adverse weather.
2：Sample Selection and Data Sources:
The study uses simulated data generated through OptiSystem? 14.2 software to model the FSO link under different conditions.
3：2 software to model the FSO link under different conditions.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: OptiSystem? 14.2 software for simulation, DP-16QAM modulation format, coherent detection setup, and DSP algorithms for signal processing.
4：2 software for simulation, DP-16QAM modulation format, coherent detection setup, and DSP algorithms for signal processing.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The FSO link is subjected to simulations under weak and strong turbulence conditions, with and without adverse weather effects, to evaluate BER, SNR, and operational range.
5：Data Analysis Methods:
Performance metrics such as BER and SNR are analyzed to compare the effectiveness of coherent detection and DSP against traditional IM/DD systems.
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